Spacing For Roof Vents

Soffit vents or under eave vents are installed on the underside of the roof that hangs over the siding the eaves.
Spacing for roof vents. Prior to installing the ridge vent a 1 inch wide strip of roof decking is cut out along both sides of the ridgeline to allow for air movement through the vent. It is important that air movement occurs and is not impeded by any framing members of the. Continuous or individual soffits. Drive nails up through the sheathing and shingles to mark roof air vent locations.
Choose one of the following products to meet the recommended exhaust nfva of 528 square inches. Center nails between rafters 18 in. You need to have an equal number of vents located at the bottom of the attic or under the roof easement as you have at the top of the attic near a gable or ridge. Soffit vents are one of the most popular intake vent styles.
27 lineal feet required. Roof vents will provide about half of the vent area and soffit vents the other half. For the previous example you would need 20 soffit vents. Ventsure 4 foot strip heat moisture ridge vent.
Mark attic roof air vent locations. Next divide the square footage of vent space required by the square footage of soffit vent you have selected. From the roof s peak. How to install roof vents.
They come in a number of shapes such as squares rectangles and triangles. A ridge vent is a ventilation strip that is placed along the ridgeline of the home.